Halozyme Therapeutics, Inc.

Good day and thank you for standing by. Welcome to the Halosign first quarter 2021 financial results conference call. At this time, all participants are in a listen-only mode. After the speaker's presentation, there will be a question and answer session. To ask a question during the session, you will need to press star 1 on your telephone. Please be advised that today's conference is being recorded. If you require any further assistance, please press star 0. I would now like to hand the conference over to your speaker today, Al Khaldani, Vice President of Investor Relations and Corporate Communications. Thank you. Please go ahead.

Thank you. Good afternoon and welcome to our first quarter 2021 financial results conference call. In addition to our press release issued today after the close, you can find a supplementary slide presentation that will be referenced on today's call in the investor relations section of our website. Leading the call will be Dr. Helen Torley, Halos Arms President and Chief Executive Officer, who will provide an update on our business, and Elaine Sun, our Chief Financial Officer, who will review our financial results for the first quarter. On today's call, both GAAP and non-GAAP financial measures will be discussed. The non-GAAP or adjusted financial measures are reconciled with the comparable GAAP financial measures in our earnings press release and slide presentations. During the call, we will be making forward-looking statements. I refer you to our SEC filings for a full listing of the risks and uncertainties.

I'll now turn the call over to Helen.